Finding the Third Proportional to 99,270 and 216,031.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,270 : 216,031.50 = 216,031.50 : x
2. Step 2: Convert to fraction form
   99,270/216,031.50 = 216,031.50/x
3. Step 3: Cross multiply
   99,270x = 216,031.50 × 216,031.50
4. Step 4: Simplify right side
   99,270x = 46,669,608,992.25
5. Step 5: Solve for x
   x = 46,669,608,992.25/99,270
6. Step 6: Final answer
   x = 470,128.02